NASASpaceFlight.com Forum
International Space Flight (ESA, Russia, China and others) => Russian Launchers - Soyuz, Progress and Uncrewed => Topic started by: anik on 05/31/2013 10:57 am
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The launch is planned at 21:43:54 UTC on July 19th.
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This launch caught my eye as I see the BBC are major customers on this satellite.
Regular readers will recall that in February 2012, SES retired Astra 2D and BBC services moved to a new temporary home on Astra 1N. Astra 1N is due to take up its permanent position in 2013 (19°East), so the BBC’s services will move to their new permanent home on Astra 2E (28.2°East) when that becomes operational. SES expects Astra 2E to launch in Q2 2013, so we currently expect to transition BBC services to it during summer 2013.
http://www.bbc.co.uk/blogs/aboutthebbc/posts/Changes-to-BBC-Satellite-transponders-in-2013
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Astra 2E satellite was delivered to Baikonur cosmodrome.
http://www.khrunichev.ru/main.php?id=1&nid=2837 (on Russian)
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One month to go then .... start the counting .... :-)
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Mission overview
http://www.ilslaunch.com/sites/default/files/pdf/A2E%20Mission%20Overview%20final_0.pdf
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Briz-M upper stage was delivered to Baikonur cosmodrome today.
http://www.khrunichev.ru/main.php?id=1&nid=2840 (on Russian)
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ASTRA 2E being unloaded from its transport casing at the Baikonur Cosmodrome in Kazakhstan.
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Astra 2E mission overview
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Astra 2E mission overview
Isn't this the same as the one previously posted?
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Astra 2E mission overview
Isn't this the same as the one previously posted?
No, the previous one is final_0.pdf, the one I attached is final.pdf, which should be the final of final version ;)
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Astra 2E mission overview
Isn't this the same as the one previously posted?
No, the previous one is final_0.pdf, the one I attached is final.pdf, which should be the final of final version ;)
The contents appear the same… but in the revised one it has
Title: ProtoStar II Mission Overview
Subject: Rev. 1
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New launch time of 21:43:57 UTC on July 20: http://www.federalspace.ru/main.php?id=10 (http://www.federalspace.ru/main.php?id=10)
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Any information if this launch will be deferred due to the Proton failure on July 2nd?
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Any information if this launch will be deferred due to the Proton failure on July 2nd?
Not yet, but we can expect a long delay.
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astra 2e safe
http://www.ilslaunch.com/updates-failure-glonass-july-2013
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astra 2e safe
http://www.ilslaunch.com/updates-failure-glonass-july-2013
Here is the full press release:
PRESSER LINK: http://www.ilslaunch.com/updates-failure-glonass-july-2013
UPDATE ON RUSSIAN FEDERAL PROTON GLONASS MISSION FAILURE
July 8, 2013:
The Proton Launch System carrying the Russian Federal GLONASS mission on July 2, 2013 from Launch Pad 24 failed, resulting in the integrated launch vehicle falling back to earth a short distance from the launch pad.
The following is a status update on several items:
Personnel:
Our number one priority at ILS is safety, and we are pleased to report that all personnel associated with the Astra 2E campaign were a safe distance away at the ILS safety area, and are all safe. Additionally, we have been told that there were no injuries or casualties to Russian or Kazakh personnel.
Astra 2E Campaign Status:
The Astra 2E spacecraft is safe and has been configured for short term storage. The spacecraft has not been fueled. The majority of the team is leaving Baikonur on 5 July 13 and will return after the Russian State Commission and ILS FROB complete their work on root cause and corrective actions.
Launch Pad facilities:
The impact area was a far enough distance from LP24 and LP39 and we understand that neither launch pads were damaged.
Russian Launch Investigation:
The Russian State Commission has been established and will be investigating the potential causes of the failure. Flight and Ground Telemetry was transferred to Moscow and is being reviewed by subject matter experts. As this mission failed very early in flight, the investigation is concentrating on the pre-launch sequence and early flight telemetry data. There are many rumors and much speculation on the internet and through other sources, and you may have your own thoughts and questions as well. The Russian State Commission will complete their work and release their findings in due time.
ILS FROB:
Since the Russian State Commission is still in progress, we cannot reliably estimate the timing of the FROB, but based on experience, we estimate that it would not start until late July at the earliest.
Return to Flight and Proton Manifest:
The schedule for the return to flight and subsequent missions will be determined once the Russian State Commission and ILS FROB completes their efforts and the required corrective actions have been implemented.
ILS will provide regular updates as new information develops.
Related Links:
http://www.ilslaunch.com/newsroom/news-releases/investigation-russian-federal-proton-glonass-mission-failure-underway (Investigation into Russian Federal Proton Glonass Mission Failure is Underway)
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LINK: http://www.ilslaunch.com/updates-failure-glonass-july-2013
UPDATE ON RUSSIAN FEDERAL PROTON GLONASS MISSION FAILURE
July 12, 2013
Below is an update on the 2 July 2013 Russian Federal Proton M/Block DM-03 GLONASS mission failure.
Astra 2E Spacecraft Status:
The Astra 2E Spacecraft has been configured for short term storage and is being regularly monitored by Astrium specialists and secured by Astrium/ILS security personnel on site.
Astra 2E Campaign Status:
By 9 July, the majority of the Astra 2E team has left Baikonur. The team will return after the Russian State Commission and ILS FROB complete their work on root cause and required corrective actions and all parties agree to resume operations.
Proton Launch Pad Facility Status:
The impact area was at a safe distance from Launch Pad 24 and Launch Pad 39 and neither launch pad was damaged.
Environmental Status:
Per ILS standard practice, ILS safety personnel began monitoring building 92A50 and the hotel complex for the presence of propellant vapors prior to the GLONASS launch. In addition, several hours after the failure, ILS monitored for the presence of propellant vapors on the road into the town of Baikonur and Krainy Airport. As of today, no propellant vapors have been detected by ILS in or around the ILS facilities, on the road into Baikonur town, or in the town itself. ILS continues to monitor for the presence of propellants.
Russian Investigation:
The Russian State Commission has been established and is actively investigating the potential causes of the failure. The Russian State Commission will release their findings upon completion of the investigation. It is currently estimated that the Russian State Commission will complete their work in late July. Only after the Russian State Commission completes their work will an official root cause or causes be published.
ILS FROB:
The Russian State Commission is still in progress. We estimate that the FROB may begin in early to mid-August based on a late July completion of the Russian State Commission.
Return to Flight and Proton Manifest:
The schedule for the return to flight and subsequent missions will be determined once the Russian State Commission and ILS FROB complete their efforts and the required corrective actions have been implemented.
We plan to provide you with regular updates as new information develops.
John L. Palmé
Vice President & Chief Technical Officer
Related Links:
GLONASS Failure Update - July 08 (http://www.ilslaunch.com/update-failure-glonass-july-08)
Investigation into Russian Federal Proton Glonass Mission Failure is Underway (http://www.ilslaunch.com/newsroom/news-releases/investigation-russian-federal-proton-glonass-mission-failure-underway)
GLONASS July 2 (http://www.ilslaunch.com/category/tags/glonass-july-2)
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Per ILS, launch now planned on September 15
http://www.ilslaunch.com/newsroom/news-releases/ils-frob-concludes-glonass-proton-launch-anomaly-investigation
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Oops :-\...
Roscosmos denies plans to launch Proton rocket from Baikonur on Sept 15
http://www.interfax.ru/russia/news.asp?id=323645 (On Russian)
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Oops :-\...
Roscosmos denies plans to launch Proton rocket from Baikonur on Sept 15
http://www.interfax.ru/russia/news.asp?id=323645 (On Russian)
...and ILS refutes, saying that they are pressing on for launch on September 15.
http://ria.ru/science/20130816/956697561.html (http://ria.ru/science/20130816/956697561.html)
I guess either those at Roscosmos are being cautious or that they aren't happy that ILS broke the news first..... ::)
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Launch is planned on September 17
Russian Proton rocket program set to resume on September 17
http://www.interfax.ru/russia/news.asp?id=325516 (On Russian)
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Astra-2E Launch Poster
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http://www.interfax.ru/news.asp?id=328331
Kazakhstan requests to delay Proton-M launch due to unfinished detoxication of area of July's falling.
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http://www.interfax.ru/news.asp?id=328361
Due to technical problems the launch has been delayed to the end of September or beginning of October.
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http://ria.ru/science/20130912/962723809.html
The possible launch date is September 30th.
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ILS Proton Launch of ASTRA 2E Postponed
http://www.ilslaunch.com/newsroom/news-releases/ils-proton-launch-astra-2e-postponed
Reston, VA, September 12, 2013 – The launch of an ILS Proton launch vehicle with the ASTRA 2E satellite was postponed today for technical reasons associated with the launch vehicle. The satellite is being launched for SES of Luxembourg and was built by Astrium. The launch date will be determined at a later time.
On September 11, Khrunichev engineers at the launch site received an out of tolerance reading in the first stage of the vehicle. It was determined that further investigation is necessary, requiring the launch vehicle be returned to the processing hall for additional testing. The vehicle and satellite remain in a safe configuration at the launch site.
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This NOTAM dated today looks like one for Proton 3rd stage before the latest launch delay..
A3960/13 - QWMLW THE RUSSIAN FEDERAL SPACE AGENCY PLANS TO LAUNCH A MISSILE INTO SPACE AND TO SINK ITS FRAGMENTES IN THE WATERS OF THE PACIFIC OCEAN. CHARACTERISTICS OF IMPACT AREA: N2515.0 E16000.0 N2600.0 E16045.0 N2330.0 E16335.0 N2245.0 E16248.0 N2515.0 E16000.0 IN THE INTEREST OF SAFETY ALL NON-PARTICIPATING AIR TRAFFIC ARE ADVISED TO AVOID THE NOTAMED AREA. IFR AIRCRAFT UNDER ATC JURISDICTION SHOULD ANTICIPATE CLEARANCE AROUND THE NOTAMED AREA. SFC - UNL, DAILY 2130-2300, 17 SEP 21:30 2013 UNTIL 19 SEP 23:00 2013. CREATED: 12 SEP 17:25 2013
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http://interfax.ru/russia/news.asp?id=329807
Baikonur. September 19. INTERFAX.RU - Specialists Khrunichev Center at Baikonur completed the repair of the carrier rocket "Proton-M", where a week ago the fault was detected.
Currently retested system booster, after which the rocket will be transported to the technological gas station for refueling tanks low pressure booster.
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Delayed Proton Mission Now Scheduled for Sept. 30
International Launch Services (ILS) of Reston, Va., in a statement on behalf of itself and Proton prime contractor Khrunichev Space Center of Moscow, said the two-week delay of the launch, which will deploy the Astra 2E telecommunications satellite owned by SES of Luxembourg, will not affect the number of Proton missions planned between now and the end of the year.
Before the latest delay, ILS had said the Proton would conduct five missions between September and January. The first would be the Astra 2E launch, with Sirius XM Satellite Radio FM6 to follow about a month later. Two launches of Russian government satellites — which are not managed by ILS — would then occur in November and December, to be followed by a final commercial launch in December.
The presumed customer for 2013’s last commercial launch is London-based Inmarsat, which wants to get the first of three new-generation Ka-band Global Xpress satellites into orbit by the end of the year.
The ILS/Khrunichev statement suggests that discussions with Kazakhstan — Proton rockets are launched from the Baikonur Cosmodrome in Kazakhstan — over rocket debris and safety, which are not new, are the main reason the return to flight was delayed for two weeks. The statement reads:
“The Astra 2E mission team is preparing for the launch on September 30. While ILS and Khrunichev did address a technical issue during this delay, the primary purpose of the delay was to accommodate a joint review by the Russian and Kazakhstan government to address environmental and safety concerns. We agree that undertaking this review is a prudent precautionary measure. While this review will have a short delay impact to the Astra 2E and Sirius FM6 missions, it will not impact the number of Proton missions we anticipated launching before year end 2013.”
ILS/Khrunichev/spacenews.com
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SFN now reports (http://www.spaceflightnow.com/tracking/index.html) the launch will go on September 29 at 21:38 UTC - just after the Falcon. ;)
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Rocket rolled out for upper stage fueling: http://www.khrunichev.ru/main.php?id=1&nid=2879 (http://www.khrunichev.ru/main.php?id=1&nid=2879)
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Proton M/Astra 2E Integrated Launch Vehicle Rolled Out to Launch Pad
Following the State Review Board’s decision, the roll out of the Proton M/Astra 2E integrated launch vehicle took place on Thursday, September 26. The launcher was erected on its launch pad.
Team of specialists from Khrunichev Space Center and other Russian space industry enterprises started prelaunch activities in accordance with the schedule for 'Launch Day One”.
http://www.khrunichev.ru/main.php?id=1&nid=879
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And video of the roll-out
http://www.youtube.com/watch?v=ofWWO0d_jOM
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new link from ils
http://astra2e.imgondemand.com/
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NOTAM for 3rd stage debris
A4277/13 - QRDCA THE RUSSIAN FEDERAL SPACE AGENCY HAS PLANNED A MISSILE LAUNCH. DEBRIS FROM THIS LAUNCH WILL FALL WITHIN AN AREA BOUNDED BY 2515N/16000E 2600N/16045E 2330N/16335E 2245N/16248E BACK TO THE POINT OF ORIGIN. IN THE INTEREST OF SAFETY ALL NON-PARTICIPATING AIR TRAFFIC ARE ADVISED TO AVOID THE NOTAMED AREA. IFR AIRCRAFT UNDER ATC JURISDICTION SHOULD ANTICIPATE CLEARANCE AROUND THE NOTAMED AREA. SFC - UNL, 2130-2300Z DAILY, 29 SEP 21:30 2013 UNTIL 02 OCT 23:00 2013. CREATED: 27 SEP 15:10 2013
NOTAM for 2nd stage and fairing debris
P5344/13 - RESTRICTED AREA UNR1238 ACT. SFC - UNL, DAILY 2130-2230, 29 SEP 21:30 2013 UNTIL 30 SEP 22:30 2013. CREATED: 27 SEP 03:47 2013
P5290/13 - FLW ATS RTE SEGMENTS CLSD: A814 ARNUL - ADOBA B206 ARNUL - AKTAS G489 TELRU - AKTAS. SFC - UNL, DAILY 2130-2230, 29 SEP 21:30 2013 UNTIL 30 SEP 22:30 2013. CREATED: 25 SEP 07:56 2013
NOTAM for 1st stage debris
K0569/13 - ATS ROUTE SEGMENTS CLSD: 1.A113 TIROK-GISIR FROM 30 TO 65KM 2.B822 LUGER-DIMBO FROM 40 TO 75KM SFC/UNL. SFC - UNL, DAILY 2130-2230 UTC, 29 SEP 21:30 2013 UNTIL 30 SEP 22:30 2013. CREATED: 26 SEP 11:02 2013
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Moving this one early, given it's one of the three major events on Sunday.
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Khrunichev info about the launch
http://coopi.khrunichev.ru/main.php?id=645
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Launch vehicle propolent loading was started at 1538UTC.
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Launch vehicle propolent loading was started at 1538UTC.
aahhhh the next one is already getting started..I have to learn how to multitask.
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At this time launch vehicle countdown activities are commencing at Baikonur!
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Launch pad reopened for final closeouts at 1808UTC.
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At 1838UTC all personnel should be in their final positions for launch.
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Launch at 2138 GMT (1738hrs/5:38 p.m. EDT)
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Broadcast will start here http://astra2e.imgondemand.com/ at 1715 hrs EDT/5:15pm EDT/2115hrs GMT/UTC.
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T-1h 20m... until this time there are no webcasts available.
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Service tower retraction will start in a few minutes...
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Tower rollback is in progress.
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TsENKI webcast started...
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What a day! :)
Launch preview:
http://www.nasaspaceflight.com/2013/09/ils-proton-m-mission-astra-2e/
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Service tower still on the move...
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I was already missing that rocket!!!
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*phew* Long day. ;D
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50 minutes for launch...
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As reported by Satori, this broadcast has started. 47 minutes til launch.
http://www.tsenki.com/en/broadcast/broadcast/live1.php
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last time I had a bad experience with a Proton
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At T-45 m, the LV final countdown activities commence. Propulsion system GO signal is generated by the
LV GN&C GLSTE. Countdown display system remote units are synchronized to the master CD clock.
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40 minutes for launch... all looks fine...
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T-35m. LV GN&C GLSTE arms the launch abort systems. Readiness green indicator light illuminates on the launch abort unit front panel. Two redundant displays on the launch abort unit are synchronized to the CD clock and start countdown. SC launch unit abort switch is active.
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I'm getting nothing on the Tsenki feed, and jaunty music on the ILA feed.
Anybody having any success?
Try http://www.tv-tsenki.com/live6.php
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ILS webcast in 10 mins. http://astra2e.imgondemand.com/
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Does you count clock constantly stop? Mine has been.
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25 minutes for launch!
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Does you count clock constantly stop? Mine has been.
Nope, use this link http://www.tv-tsenki.com/live6.php
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And that's the funky jazz over with. ILS webcast has begun.
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Evening Jennifer!
Nice bow tie....
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Does you count clock constantly stop? Mine has been.
Nope, use this link http://www.tv-tsenki.com/live6.php
Must be on my end, thanks anyway. ILS is working fine.
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I could listen to this lady (on the profile voiceover) all day long. Amazingly lovely accent.
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Mr Slack with his Go Proton, Go Briz-M! Oh, he didn't say it that time!
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No mentions of the previous failure.
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T-10m SC Customer gives verbal readiness on countdown network.
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5 minutes for launch...
LV GN&C GLSTE sends a T-300 sec command signal to the Breeze M GN&C GLSTE to synchronize the lift-off time. Breeze M begins transfer to internal power.
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Cool, I didn't even know Briz-M had a drop tank. Also that bow tie was awesome.
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Wall to wall promos on the ILS webcast.
The satellite:
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nice HD
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Where's the good stream? ILS cast is all promos.
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120 seconds for launch... LV GN&C begins transfer to internal power. Breeze M completes transfer to internal power, sends “BREEZE M GO” signal to LV GN&C GLSTE.
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T-90 seconds.
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T-1m
At T-3.1s LV GN&C GLSTE performs a final GO/NO-GO check of the LV, Breeze M and SC. If all the integrated LV components are GO, the first stage ignition sequence start is sent at the estimated time.
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I'm not getting any sound at all on the Tsenki feed, and ILS is a good 20 seconds behind it.
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T-60 seconds. Weather green.
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LAUNCH!
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Ignition.
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LAUNCH!! Good Luck Proton!
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This one is heading in the right direction.
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Inti first stage and into the clouds!
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Ignition.
Wonderful capture. Thanks!!
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launch
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Through MaxQ
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Nominal first stage.
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Staging!
Second stage ignition.
1-2 Sep.
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Second stage burn started!
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Staging! Into second stage!
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Second stage burn nominal!
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2 / 3 sep
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.
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And fairing sep...
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3rd stage burning...
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Englishman with Astra 2E
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ILS stream showing random footage instead of the launch again. It didn't explode though, so good enough for me :D
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Third stage main engine shutdown!
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3rd stage / Briz-M sep!
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.
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Waiting for the 1st Briz-M burn!!!
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...and into 1st Briz-M burn!!!
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Staging. Stage 3 burn complete. On to the Briz-M.
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First Briz-M burn.
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There will be five Briz-M burns on this 9 hour 12 minutes mission!!
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All up to the Briz now.....going to be a long day-night for someone ::)
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First burn of the Briz-M underway.
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First reference to the previous failure.
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And we have the end of the first Briz-M burn...
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And we have the end of the first Briz-M burn...
So that should mean the orbital unit has now ... reached orbit, right?
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He's a lively character! ;D
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last screen grabs from me...enjoy
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First burn complete.
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And we have the end of the first Briz-M burn...
So that should mean the orbital unit has now ... reached orbit, right?
Yes, it is in orbit now.
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http://www.youtube.com/watch?v=plpsodmQ2oc
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The ILS webcast has interesting background information, but it's not so big on live coverage.
The Tsenki video is still working, but I don't have any sound.
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ILS webcast ending.
Long way to go for this spacecraft, but that completes Super Sunday with three big successes! :)
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Two launches, successful berthing, some other stuff ;)...
I gotta say, Today was a good day.
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Image of the launch pad PU-39 in Baikonur. TsENKI webcast ended.
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Congrats Russia (so far)!
What a good way to round out a truly great day in space.
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This has been a great day!
Congratulations, ILS and Khurnichev (sp?)!
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any list telemetry to view ?
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any list telemetry to view ?
Try http://www.space-center.ru/LiveEvents.aspx
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Second Briz-M burn completed 21 seconds early - probably just the stages' performances are better than planned.
Next two burns scheduled in over a hour.
Anyone knows the rocket and upper stages' serial numbers?
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Second Briz-M burn completed 21 seconds early - probably just the stages' performances are better than planned.
Combined with the 6 second early completion of the first burn, it seems like a pattern. The performance would be better if the mass were lower than planned; that might not be a good thing, though!
(Attached image from Google translation of http://www.space-center.ru/LiveEvents.aspx.)
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Another Briz burn started: mission elapsed time 12492 seconds.
http://www.space-center.ru/LiveEvents.aspx
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3rd & 4th burns completed & the APT has been successfully jettisoned (ILS)
http://www.ilslaunch.com/mission-control/mission-blog/astra-2e-3rd-and-4th-burn-completion
(http://www.ilslaunch.com/mission-control/mission-blog/astra-2e-3rd-and-4th-burn-completion)
ASTRA 2E 3rd and 4th Burn Completion
September 30, 2013 1:47 am (GMT)
ILS Communications Team
We have confirmed that the Breeze M upper stage has successfully completed its third and fourth burns, as well as jettisoning its additional propellant tank. The vehicle is now in a 5-hour coast period, during which we will have nothing to report. The 5th burn is scheduled to start around 2:31 Eastern time, or 06:31 GMT, and last for approximately 6 minutes. Separation of the ASTRA 2E spacecraft is scheduled to follow the 5th burn completion by about that by about 13 minutes.
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3rd & 4th burns completed
The burn durations are consistently running short; I calculate by around 1.9%.
EDIT: Looking at previous information logs, it looks like this is pretty consistent for Briz-M.
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Now cataloged by US tracking
39285 (presumably Astra 2E/Briz) 455 x 35740 km x 49.1 deg
39287 (DTB drop tank) 336 x 15157 km x 49.6 deg
So 39286 as expected is reserved from the Briz once it separates.
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The final Briz-M burn appears to have taken place.
EDIT to add: on-time S/C separation!
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S/C separation was right on time
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3rd & 4th burns completed
The burn durations are consistently running short; I calculate by around 1.9%.
EDIT: Looking at previous information logs, it looks like this is pretty consistent for Briz-M.
NROL-30 launch failed when the centaur engine shut down just 4 seconds early on final burn. Anybody explain to me how does Briz-M manages to successfully deploy its payloads despite running short on every burn?
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ASTRA 2E MISSION SUCCESS!
http://www.ilslaunch.com/mission-control/mission-blog/astra-2e-mission-success
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Anyone knows the rocket and upper stages' serial numbers?
According to http://www.zenite.nu/orbita/proton-m-volta-ao-servico/ this is 8K82KM Proton-M (93539) and Briz-M (99540).
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Exact launch time was 2138:09,969UTC.
Congratulations to ILS and Khrunichev, and welcome back Proton-M!!!
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Khrunichev launch photos... http://www.khrunichev.ru/main.php?id=1&nid=2882
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Roscosmos launch photos... http://www.roscosmos.ru/19849/
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3rd & 4th burns completed
The burn durations are consistently running short; I calculate by around 1.9%.
EDIT: Looking at previous information logs, it looks like this is pretty consistent for Briz-M.
NROL-30 launch failed when the centaur engine shut down just 4 seconds early on final burn. Anybody explain to me how does Briz-M manages to successfully deploy its payloads despite running short on every burn?
Perhaps because the Briz-M over-performs on every burn?
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My congratulations :) !!!
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Roscosmos launch video
http://www.youtube.com/watch?v=k0WgOPCAvuU
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3rd & 4th burns completed
The burn durations are consistently running short; I calculate by around 1.9%.
EDIT: Looking at previous information logs, it looks like this is pretty consistent for Briz-M.
NROL-30 launch failed when the centaur engine shut down just 4 seconds early on final burn. Anybody explain to me how does Briz-M manages to successfully deploy its payloads despite running short on every burn?
Perhaps because the Briz-M over-performs on every burn?
I think it was Anik who said the upper stage recalculates the flight program as soon it separates from the rocket. Hence the slight differences. I can't find his relevant post using the forum's search engine...
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3rd & 4th burns completed
The burn durations are consistently running short; I calculate by around 1.9%.
EDIT: Looking at previous information logs, it looks like this is pretty consistent for Briz-M.
NROL-30 launch failed when the centaur engine shut down just 4 seconds early on final burn. Anybody explain to me how does Briz-M manages to successfully deploy its payloads despite running short on every burn?
Perhaps because the Briz-M over-performs on every burn?
I think it was Anik who said the upper stage recalculates the flight program as soon it separates from the rocket. Hence the slight differences. I can't find his relevant post using the forum's search engine...
More accurate data here
http://coopi.khrunichev.ru/download/2013/a2e/email/rus/a2e_e11.htm
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any know NORAD ID of astra 2e ?
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3rd & 4th burns completed
The burn durations are consistently running short; I calculate by around 1.9%.
EDIT: Looking at previous information logs, it looks like this is pretty consistent for Briz-M.
NROL-30 launch failed when the centaur engine shut down just 4 seconds early on final burn. Anybody explain to me how does Briz-M manages to successfully deploy its payloads despite running short on every burn?
Perhaps because the Briz-M over-performs on every burn?
I think it was Anik who said the upper stage recalculates the flight program as soon it separates from the rocket. Hence the slight differences. I can't find his relevant post using the forum's search engine...
Yeah I know. He actually replied to my question in Anik-G1 thread:
http://forum.nasaspaceflight.com/index.php?topic=31080.msg1039219#msg1039219 (http://forum.nasaspaceflight.com/index.php?topic=31080.msg1039219#msg1039219)
I have no doubts on anik's authenticity. But why the Briz-M performance always turns out to be better than what Khrunichev guys anticipate on every mission?
I'm sure some people's heart would've missed a beat or two when they learn about a 21 second short burn! :P
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I have no doubts on anik's authenticity. But why the Briz-M performance always turns out to be better than what Khrunichev guys anticipate on every mission?
Better to over perform, than plan a mission around this over performance and come up short on fuel.
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any know NORAD ID of astra 2e ?
2013-056A 39285 ASTRA 2E SES 2013-09-30
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Briz-M (2013-056B), after final burn, was in the following orbit:
3527 x 33961 km x 23.49° (epoch: Sept 30, 1229UTC)
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More accurate data here
http://coopi.khrunichev.ru/download/2013/a2e/email/rus/a2e_e11.htm
This is GREAT -- thanks!
It seems to indicate the over-performance was not provided to the payload; its GTO ended up further from GEO than planned. In the attached screenshot, I think a better translation of the "Evaluation" column heading would be "Estimated" or "Measured", and a better translation of the "Rating" column header would be "Planned." Is that correct? In which case perigee was low by 50 km....
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More accurate data here
http://coopi.khrunichev.ru/download/2013/a2e/email/rus/a2e_e11.htm
This is GREAT -- thanks!
It seems to indicate the over-performance was not provided to the payload; its GTO ended up further from GEO than planned. In the attached screenshot, I think a better translation of the "Evaluation" column heading would be "Estimated" or "Measured", and a better translation of the "Rating" column header would be "Planned." Is that correct? In which case perigee was low by 50 km....
http://coopi.khrunichev.ru/download/2013/a2e/email/eng/a2e_e11.htm
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We have no idea why the Briz-M stage could apparently not fire for the planned duration. Of course, it is also possible that the measurements of the engine firings were not that accurate.
Or, the Briz-M may have stopped firing for technical reasons.
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Nice thread, thank you all.
SES S.A. is pleased to announce that the ASTRA 2E satellite roared into space on board an ILS Proton Breeze M booster last night at 3:38am Baikonur time (11:38pm CET and 5:38pm EDT on 29 September). After a nine-hour, 12-minute mission, the Breeze M upper stage of the Proton rocket successfully released the ASTRA 2E satellite directly into geostationary transfer orbit.
http://www.itweb.co.za/index.php?option=com_content&view=article&id=67829:ASTRA-2E-satellite-launched-successfully&catid=74 (http://www.itweb.co.za/index.php?option=com_content&view=article&id=67829:ASTRA-2E-satellite-launched-successfully&catid=74)
One more feather in Russia's cap 8)